linux-kernel - Re: [PATCH AUTOSEL 5.10 3/8] platform/chrome: cros_ec

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Message-ID: <Zabq2PKJwsllm9zk@duo.ucw.cz>
Date: Tue, 16 Jan 2024 21:45:12 +0100
From: Pavel Machek <pavel@...x.de>
To: Sasha Levin <sashal@...nel.org>
Cc: linux-kernel@...r.kernel.org, stable@...r.kernel.org,
	Avadhut Naik <Avadhut.Naik@....com>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Tony Luck <tony.luck@...el.com>,
	"Rafael J . Wysocki" <rafael.j.wysocki@...el.com>,
	bleung@...omium.org, tzungbi@...nel.org,
	chrome-platform@...ts.linux.dev
Subject: Re: [PATCH AUTOSEL 5.10 3/8] platform/chrome: cros_ec_debugfs: Fix
 permissions for panicinfo

Hi!

> From: Avadhut Naik <Avadhut.Naik@....com>
> 
> [ Upstream commit 0706526ec7704dcd046239078ac175d11a88a95e ]
> 
> The debugfs_create_blob() function has been used to create read-only binary
> blobs in debugfs. The function filters out permissions, other than S_IRUSR,
> S_IRGRP and S_IROTH, provided while creating the blobs.
> 
> The very behavior though is being changed through previous patch in the
> series (fs: debugfs: Add write functionality to debugfs blobs) which makes
> the binary blobs writable by owners. Thus, all permissions provided while
> creating the blobs, except S_IRUSR,S_IWUSR, S_IRGRP, S_IROTH, will be
> filtered by debugfs_create_blob().

This needs previous patch to make sense (according to changelog), and
we don't have that. Please drop.

BR,
								Pavel

-- 
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HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany

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